vou me arrepender

I will regret it

→ ir
phrase Rare #40,713
I will regret it Used to say that you expect to feel regret in the future. Vou me arrepender is a first-person future expression; the object of regret is often understood from context.
PO: Se eu fizer isso, vou me arrepender.
EN: If I do that, I will regret it.

Sei que vou me arrepender disto.

I know I'm going to regret this.

Não vou me arrepender.

I won't regret it.

— Os Incompreendidos (1959)

Sinto que vou me arrepender disso.

I feel like I'm going to regret this.

— Tudo em Todo o Lugar ao Mesmo Tempo (2022)

Tenho certeza de que vou me arrepender disto.

I'm sure I'm going to regret this.